OD or Od may refer to:

Education

Old Diocesan The Diocesan College (commonly known as Bishops) is a private, English medium, boarding and day high school for boys situated in the suburb of Rondebosch in Cape Town in the Western Cape province of South Africa. The school was established on ...

, a former pupil of Diocesan College *

Old Dunelmian This is a list of notable Old Dunelmians, former students of Durham School at Durham, England. A to E * Sir Carl Douglas Aarvold (1907–1991), Recorder of London, England International rugby player, British and Irish Lions rugby player. * Ga ...

, a former pupil of Durham School

Medicine

* OD or o.d., an abbreviation used in medical prescriptions for or "once daily" both meaning "take once every day" *

Doctor of Optometry Optometry is a specialized health care profession that involves examining the eyes and related structures for defects or abnormalities. Optometrists are health care professionals who typically provide comprehensive primary eye care. In the Uni ...

(O.D.) * , , or , meaning "right eye" in general ophthalmologic or optometric usage, particularly in eyeglass prescriptions *

Osteochondritis dissecans Osteochondritis dissecans (OCD or OD) is a joint disorder primarily of the subchondral bone in which cracks form in the articular cartilage and the underlying subchondral bone. OCD usually causes pain during and after sports. In later stages ...

, a medical disease affecting the joints of both humans and animals *

Overdose A drug overdose (overdose or OD) is the ingestion or application of a drug or other substance in quantities much greater than are recommended.

, the use of a drug in quantities greater than recommended

Music

Oblivion Dust Oblivion Dust is a Japanese rock music, rock band first active from 1996 to 2001; they reunited in 2007. Although they were originally largely influenced by early 1990s American grunge bands,

, a Japanese rock band *

One Direction One Direction, often shortened to 1D, are an English-Irish pop boy band formed in London in 2010. The group are composed of Niall Horan, Liam Payne, Harry Styles, Louis Tomlinson, and previously Zayn Malik until his departure from the gr ...

, a British/Irish pop music band *

Orphei Drängar Sångsällskapet Orphei Drängar (OD) is a Swedish male voice choir and singing society based in Uppsala, Sweden. While best known for its high quality performances of the classical repertoire, OD sings music of all genres in many different langu ...

, a Swedish male choir * O.D, a song by Sunna from the album '' One Minute Science'' (2000) * ''

Overly Dedicated ''Overly Dedicated'' (sometimes stylized as ''O(verly) D(edicated)'' and shortened as ''OD'') is the fourth solo mixtape by American rapper Kendrick Lamar, released on September 14, 2010, via Top Dawg Entertainment. The album features guest appea ...

'', a 2010 mixtape by Kendrick Lamar * ''The OD EP'', a 2012 extended play by

Danny Brown Daniel Dewan Sewell (born March 16, 1981), better known by his stage name Danny Brown, is an American rapper, singer, and songwriter. He has been described by MTV as "one of rap's most unique figures in recent memory". In 2010, after amassing ...

Organizations

Batik Air Malaysia Batik Air Malaysia (formerly known as Malindo Air) is a Malaysian full service carrier, an associate carrier of Indonesian Lion Air Group, with headquarters in Petaling Jaya, Selangor, Malaysia. The original name Malindo signifies a cooperative ...

(IATA airline code OD) * '' Ordnungsdienst'' , a collaborationist organization in Nazi-occupied Poland *

Organization development Organization development (OD) is the study and implementation of practices, systems, and techniques that affect organizational change, the goal of which is to modify an organization's performance and/or culture. The organizational changes are ...

People and characters

* O.D. (musician), a member of Velcra * Super OD, a Ghanaian actor * O.D (''Gatchaman Crowds''), a character in the anime series ''Gatchaman Crowds'' * Ód or Óðr, a Nordic god

Places

Odisha Odisha (English: , ), formerly Orissa ( the official name until 2011), is an Indian state located in Eastern India. It is the 8th largest state by area, and the 11th largest by population. The state has the third largest population of ...

, India *

Stormarn (district) Stormarn () is a district in Schleswig-Holstein, Germany. It is bounded by (from the north and clockwise) the districts of Segeberg and Ostholstein, the city of Lübeck, the district of Lauenburg, and the city-state of Hamburg. History In mediev ...

, Germany (vehicle plate code OD)

Science and technology

* Optical density *

Outside diameter This page lists the standard US nomenclature used in the description of mechanical gear construction and function, together with definitions of the terms. The terminology was established by the American Gear Manufacturers Association (AGMA), unde ...

(also: ''O.D.''), cylinder or pipe external diameter *

Ordnance datum In the British Isles, an ordnance datum or OD is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as AOD for "above ordnance datum". Usually mean sea level (MSL) is used fo ...

, in Britain, an Ordnance Survey data point *

od (Unix) od is a command on various operating systems for displaying ("dumping") data in various human-readable output formats. The name is an acronym for "octal dump" since it defaults to printing in the octal data format. Overview The od program can di ...

, a Unix program *

Object Desktop Object Desktop (OD; previously the Object Desktop Network or ODNT) is an online software subscription service created by Stardock for OS/2 and relaunched for Windows in 1997. Object Desktop includes most graphical user interface customization and ...

, a suite of skinning and customization programs by Stardock, or ''ObjectDock'', another program by the same company *

Optical disc In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc that encodes binary data (bits) in the form of pits and lands on a special material, often aluminum, on one of its flat surfaces. ...

, the study of organizational change and performance *

Ordinal definable set In mathematical set theory, a set ''S'' is said to be ordinal definable if, informally, it can be defined in terms of a finite number of ordinals by a first-order formula. Ordinal definable sets were introduced by . A drawback to this informal de ...

, a set requiring only finitely-many ordinals to define under first-order logic.

Other uses

Od language Od, also known as Oad or Odki, is an Indo-Aryan language of India and Pakistan. It is spoken by around 2 million people in Gujarat, Rajasthan, Haryana, New Delhi, Punjab and Sindh. It has similarities to Marathi, with features also shared with G ...

, an Indo-Aryan language of Pakistan *

Odic force The Odic force (also called Od �d Odyle, Önd, Odes, Odylic, Odyllic, or Odems) is the name given in the mid-19th century to a hypothetical vital energy or life force by Baron Carl von Reichenbach. Von Reichenbach coined the name from that of ...

or Od, a life force * ''

Occupation Double ''Occupation Double'' (sometimes referenced as OD) is a Canadian French language reality show which first aired in 2003. It is broadcast on V, following a decade during which it was broadcast on TVA. The host of the show is comedian Jay Du Temple ...

'', a Quebec reality show that started in 2003 *

Official Declaration The Church of Jesus Christ of Latter-day Saints has twice issued Official Declarations to clarify significant doctrinal issues.. Official Declaration 1 was added to the church's official scripture, Doctrine and Covenants, in 1908; Official Declarat ...

, part of Latter-day Saint scripture *

Olive drab Olive is a dark yellowish-green color, like that of unripe or green olives. As a color word in the English language, it appears in late Middle English. Shaded toward gray, it becomes olive drab. Variations Olivine Olivine is the typical ...

, a color, particularly of some United States Army uniforms *

Online dating Online dating, also known as Internet dating, Virtual dating, or Mobile app dating, is a relatively recent method used by people with a goal of searching for and interacting with potential romantic or sexual partners, via the internet. An onlin ...

Original dance The original dance (OD) was one of the programs performed by figure skaters in ice dance competitions, in which the ice dancers skated "a dance of their own creation to dance music they have selected for the designated rhythm(s)".Rulebook, p. 90 ...

, the second part of an ice dancing competition *

Order of Distinction The Order of Distinction is a national order in the Jamaican honours system. It is the sixth in order of precedence of the Orders of Societies of Honour, which were instituted by an Act of Parliament (''The National Honours and Awards Act'') i ...

, a civil honour of Jamaica * OD - original designation in

Taxonomy Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. ...